NAIM’s studio-quality Supernait 3 amplifier was embraced by serious, high-end audio enthusiasts when it launched a few years back. Today, NAIM has upgraded the amp with new features that hardcore vinyl junkies will appreciate. In addition to the built-in Phono stage, it’s got a Class A preamp output stage which doubles as a headphone amplifier and ceramic heatsink technology which keeps heat down, the rest of the spec sheet is best likely understood by serious stereo nerds.